Two Charging MethodsThis motion detector adopts rechargeable lithium battery. It can be charged by solar energy or USB charging cable, the motion detector is suitable for indoor and outdoor environments. The ultra-high IP65 waterproof grade ensures that the motion detector is not attacked by rain. 4 Working Modes4 working modes are available: All-day sound and light alarm Night sound and light alarm Night flashing alarm Alarm closure. You can use the remote control to switch the mode according to your needs, or press the setting button on the detector to switch the mode. Scientific DesignThe motion sensor alarm is designed with a switch for adjusting the detection distance and an adjustable bracket. You can flexibly adjust the detection distance and angle, and control the detection sensitivity according to the actual demand. Note: The default detection distance of the motion sensor is 9-12 meters. Firm InstallationThe wireless motion sensor comes with a with a bracket and is mounted with screws. You can install it anywhere you want, just install the alarm on the bracket. Using screws for mounting is more solid and more suitable for various indoor and outdoor scenes.